body {
	margin: 0;
	padding: 0;
	font-family: "微软雅黑", "黑体", "宋体";
}

.main_content {
	text-align: center;
}

/*index.jsp*/

#menus {
	width: 15%;
	height: 100%;
	float: left;
}
/*
#menu1,#menu2,#menu3 {
	padding: 10px;
}
*/
.center_helper {
	width: 104px;
	margin: 0 auto;
}

.menu_button {
	margin: 10px;
}

#content {
	width: 85%;
	height: 100%;
	float: right;
}

#bg_img{
	width: 100%;
	height: 100%;
	background: url("/zk/images/merry_christmas.png") right bottom no-repeat;
}

#tab {
	padding: 10px;
}

/*register_check*/
#register_check_content {
	width: 500px;
	height: 200px;
	margin: 0 auto;
	padding-top: 20px;
	margin-top: 20px;
	background: #fafafa;
}

/*grade_input*/
#grade_input_content {
	width: 400px;
	height: 130px;
	margin: 0 auto;
	padding-top: 80px;
	margin-top: 100px;
	background: #fafafa;
}

/*exam_set*/
#exam_set_content {
	width: 500px;
	height: 200px;
	margin: 0 auto;
	padding-top: 20px;
	margin-top: 20px;
	background: #fafafa;
}

/*stu_chooseclass*/
.no_width {
	width: auto;
}